Home / 15,281.67-21,088.62-8,567.28

Finding the Fourth Proportional to 15,281.67, 21,088.62 and 8,567.28

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Solution

The fourth proportional to 15,281.67, 21,088.62 and 8,567.28 is: 11,822.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.67 : 21,088.62 = 8,567.28 : x
  2. Step 2: Convert to fraction form
    15,281.67/21,088.62 = 8,567.28/x
  3. Step 3: Cross multiply
    15,281.67x = 21,088.62 × 8,567.28
  4. Step 4: Simplify right side
    15,281.67x = 180,672,112.35
  5. Step 5: Solve for x
    x = 180,672,112.35/15,281.67
  6. Step 6: Final answer
    x = 11,822.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.